Allow for merging deleted packages into existing ones

Merge all comments and votes of deleted packages into another package if
the "Merge with" field is used. Duplicate votes (votes from a user who
already voted on the target package or voted on more than one of the
deleted packages) are discarded.
Signed-off-by: Lukas Fleischer <archlinux@cryptocrack.de>

web/html/packages.php

@@ -50,8 +50,20 @@ if (current_action("do_Flag")) {
 	$output = pkg_vote($atype, $ids, False);
 } elseif (current_action("do_Delete")) {
 	if (isset($_POST['confirm_Delete'])) {
-		$output = pkg_delete($atype, $ids);
-		unset($_GET['ID']);
+		if (!isset($_POST['merge_Into']) || empty($_POST['merge_Into'])) {
+			$output = pkg_delete($atype, $ids, NULL);
+			unset($_GET['ID']);
+		}
+		else {
+			$mergepkgid = pkgid_from_name($_POST['merge_Into']);
+			if ($mergepkgid) {
+				$output = pkg_delete($atype, $ids, $mergepkgid);
+				unset($_GET['ID']);
+			}
+			else {
+				$output = __("Cannot find package to merge votes and comments into.");
+			}
+		}
 	}
 	else {
 		$output = __("The selected packages have not been deleted, check the confirmation checkbox.");

web/template/actions_form.php

@@ -54,6 +54,8 @@
 		if ($atype == "Trusted User" || $atype == "Developer") {
 			echo "<input type='submit' class='button' name='do_Delete'";
 			echo " value='".__("Delete Packages")."' />\n";
+			echo "<label for='merge_Into'>".__("Merge into")."</label>\n";
+			echo "<input type='text' id='merge_Into' name='merge_Into' /> ";
 			echo "<input type='checkbox' name='confirm_Delete' value='1' /> ";
 			echo __("Confirm")."\n";
 		}

web/template/pkg_search_results.php

@@ -110,6 +110,8 @@ for ($i = 0; $row = mysql_fetch_assoc($result); $i++) {
 							<option value='do_UnNotify'><?php print __("UnNotify") ?></option>
 						</select>
 						<?php if ($atype == "Trusted User" || $atype == "Developer"): ?>
+							<label for='merge_Into'><?php print __("Merge into") ?></label>
+							<input type='text' id='merge_Into' name='merge_Into' />
 							<input type='checkbox' name='confirm_Delete' value='1' /> <?php print __("Confirm") ?>
 						<?php endif; ?>
 						<input type='submit' class='button' style='width: 80px' value='<?php print __("Go") ?>' />